3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
12 * Now far ahead the Road has gone,
13 * And I must follow, if I can,
14 * Pursuing it with eager feet,
15 * Until it joins some larger way
16 * Where many paths and errands meet.
17 * And whither then? I cannot say.
21 #define PERL_IN_PP_CTL_C
25 #define WORD_ALIGN sizeof(U32)
28 #define DOCATCH(o) ((CATCH_GET == TRUE) ? docatch(o) : (o))
30 static I32 run_user_filter(pTHX_ int idx, SV *buf_sv, int maxlen);
38 cxix = dopoptosub(cxstack_ix);
42 switch (cxstack[cxix].blk_gimme) {
59 /* XXXX Should store the old value to allow for tie/overload - and
60 restore in regcomp, where marked with XXXX. */
69 register PMOP *pm = (PMOP*)cLOGOP->op_other;
73 MAGIC *mg = Null(MAGIC*);
77 /* prevent recompiling under /o and ithreads. */
78 #if defined(USE_ITHREADS)
79 if (pm->op_pmflags & PMf_KEEP && PM_GETRE(pm))
84 SV *sv = SvRV(tmpstr);
86 mg = mg_find(sv, PERL_MAGIC_qr);
89 regexp *re = (regexp *)mg->mg_obj;
90 ReREFCNT_dec(PM_GETRE(pm));
91 PM_SETRE(pm, ReREFCNT_inc(re));
94 t = SvPV(tmpstr, len);
96 /* Check against the last compiled regexp. */
97 if (!PM_GETRE(pm) || !PM_GETRE(pm)->precomp ||
98 PM_GETRE(pm)->prelen != (I32)len ||
99 memNE(PM_GETRE(pm)->precomp, t, len))
102 ReREFCNT_dec(PM_GETRE(pm));
103 PM_SETRE(pm, Null(REGEXP*)); /* crucial if regcomp aborts */
105 if (PL_op->op_flags & OPf_SPECIAL)
106 PL_reginterp_cnt = I32_MAX; /* Mark as safe. */
108 pm->op_pmflags = pm->op_pmpermflags; /* reset case sensitivity */
110 pm->op_pmdynflags |= PMdf_DYN_UTF8;
112 pm->op_pmdynflags &= ~PMdf_DYN_UTF8;
113 if (pm->op_pmdynflags & PMdf_UTF8)
114 t = (char*)bytes_to_utf8((U8*)t, &len);
116 PM_SETRE(pm, CALLREGCOMP(aTHX_ t, t + len, pm));
117 if (!DO_UTF8(tmpstr) && (pm->op_pmdynflags & PMdf_UTF8))
119 PL_reginterp_cnt = 0; /* XXXX Be extra paranoid - needed
120 inside tie/overload accessors. */
124 #ifndef INCOMPLETE_TAINTS
127 pm->op_pmdynflags |= PMdf_TAINTED;
129 pm->op_pmdynflags &= ~PMdf_TAINTED;
133 if (!PM_GETRE(pm)->prelen && PL_curpm)
135 else if (strEQ("\\s+", PM_GETRE(pm)->precomp))
136 pm->op_pmflags |= PMf_WHITE;
138 pm->op_pmflags &= ~PMf_WHITE;
140 /* XXX runtime compiled output needs to move to the pad */
141 if (pm->op_pmflags & PMf_KEEP) {
142 pm->op_private &= ~OPpRUNTIME; /* no point compiling again */
143 #if !defined(USE_ITHREADS)
144 /* XXX can't change the optree at runtime either */
145 cLOGOP->op_first->op_next = PL_op->op_next;
154 register PMOP *pm = (PMOP*) cLOGOP->op_other;
155 register PERL_CONTEXT *cx = &cxstack[cxstack_ix];
156 register SV *dstr = cx->sb_dstr;
157 register char *s = cx->sb_s;
158 register char *m = cx->sb_m;
159 char *orig = cx->sb_orig;
160 register REGEXP *rx = cx->sb_rx;
162 REGEXP *old = PM_GETRE(pm);
169 rxres_restore(&cx->sb_rxres, rx);
170 RX_MATCH_UTF8_set(rx, SvUTF8(cx->sb_targ));
172 if (cx->sb_iters++) {
173 I32 saviters = cx->sb_iters;
174 if (cx->sb_iters > cx->sb_maxiters)
175 DIE(aTHX_ "Substitution loop");
177 if (!(cx->sb_rxtainted & 2) && SvTAINTED(TOPs))
178 cx->sb_rxtainted |= 2;
179 sv_catsv(dstr, POPs);
182 if (cx->sb_once || !CALLREGEXEC(aTHX_ rx, s, cx->sb_strend, orig,
183 s == m, cx->sb_targ, NULL,
184 ((cx->sb_rflags & REXEC_COPY_STR)
185 ? (REXEC_IGNOREPOS|REXEC_NOT_FIRST)
186 : (REXEC_COPY_STR|REXEC_IGNOREPOS|REXEC_NOT_FIRST))))
188 SV *targ = cx->sb_targ;
190 if (DO_UTF8(dstr) && !SvUTF8(targ))
191 sv_catpvn_utf8_upgrade(dstr, s, cx->sb_strend - s, nsv);
193 sv_catpvn(dstr, s, cx->sb_strend - s);
194 cx->sb_rxtainted |= RX_MATCH_TAINTED(rx);
196 #ifdef PERL_COPY_ON_WRITE
198 sv_force_normal_flags(targ, SV_COW_DROP_PV);
202 (void)SvOOK_off(targ);
204 Safefree(SvPVX(targ));
206 SvPVX(targ) = SvPVX(dstr);
207 SvCUR_set(targ, SvCUR(dstr));
208 SvLEN_set(targ, SvLEN(dstr));
214 TAINT_IF(cx->sb_rxtainted & 1);
215 PUSHs(sv_2mortal(newSViv(saviters - 1)));
217 (void)SvPOK_only_UTF8(targ);
218 TAINT_IF(cx->sb_rxtainted);
222 LEAVE_SCOPE(cx->sb_oldsave);
225 RETURNOP(pm->op_next);
227 cx->sb_iters = saviters;
229 if (RX_MATCH_COPIED(rx) && rx->subbeg != orig) {
232 cx->sb_orig = orig = rx->subbeg;
234 cx->sb_strend = s + (cx->sb_strend - m);
236 cx->sb_m = m = rx->startp[0] + orig;
238 if (DO_UTF8(dstr) && !SvUTF8(cx->sb_targ))
239 sv_catpvn_utf8_upgrade(dstr, s, m - s, nsv);
241 sv_catpvn(dstr, s, m-s);
243 cx->sb_s = rx->endp[0] + orig;
244 { /* Update the pos() information. */
245 SV *sv = cx->sb_targ;
248 if (SvTYPE(sv) < SVt_PVMG)
249 (void)SvUPGRADE(sv, SVt_PVMG);
250 if (!(mg = mg_find(sv, PERL_MAGIC_regex_global))) {
251 sv_magic(sv, Nullsv, PERL_MAGIC_regex_global, Nullch, 0);
252 mg = mg_find(sv, PERL_MAGIC_regex_global);
261 cx->sb_rxtainted |= RX_MATCH_TAINTED(rx);
262 rxres_save(&cx->sb_rxres, rx);
263 RETURNOP(pm->op_pmreplstart);
267 Perl_rxres_save(pTHX_ void **rsp, REGEXP *rx)
272 if (!p || p[1] < rx->nparens) {
273 #ifdef PERL_COPY_ON_WRITE
274 i = 7 + rx->nparens * 2;
276 i = 6 + rx->nparens * 2;
285 *p++ = PTR2UV(RX_MATCH_COPIED(rx) ? rx->subbeg : Nullch);
286 RX_MATCH_COPIED_off(rx);
288 #ifdef PERL_COPY_ON_WRITE
289 *p++ = PTR2UV(rx->saved_copy);
290 rx->saved_copy = Nullsv;
295 *p++ = PTR2UV(rx->subbeg);
296 *p++ = (UV)rx->sublen;
297 for (i = 0; i <= rx->nparens; ++i) {
298 *p++ = (UV)rx->startp[i];
299 *p++ = (UV)rx->endp[i];
304 Perl_rxres_restore(pTHX_ void **rsp, REGEXP *rx)
309 RX_MATCH_COPY_FREE(rx);
310 RX_MATCH_COPIED_set(rx, *p);
313 #ifdef PERL_COPY_ON_WRITE
315 SvREFCNT_dec (rx->saved_copy);
316 rx->saved_copy = INT2PTR(SV*,*p);
322 rx->subbeg = INT2PTR(char*,*p++);
323 rx->sublen = (I32)(*p++);
324 for (i = 0; i <= rx->nparens; ++i) {
325 rx->startp[i] = (I32)(*p++);
326 rx->endp[i] = (I32)(*p++);
331 Perl_rxres_free(pTHX_ void **rsp)
336 Safefree(INT2PTR(char*,*p));
337 #ifdef PERL_COPY_ON_WRITE
339 SvREFCNT_dec (INT2PTR(SV*,p[1]));
349 dSP; dMARK; dORIGMARK;
350 register SV *tmpForm = *++MARK;
357 register SV *sv = Nullsv;
362 bool chopspace = (strchr(PL_chopset, ' ') != Nullch);
363 char *chophere = Nullch;
364 char *linemark = Nullch;
366 bool gotsome = FALSE;
368 STRLEN fudge = SvCUR(tmpForm) * (IN_BYTES ? 1 : 3) + 1;
369 bool item_is_utf8 = FALSE;
370 bool targ_is_utf8 = FALSE;
376 if (!SvMAGICAL(tmpForm) || !SvCOMPILED(tmpForm)) {
377 if (SvREADONLY(tmpForm)) {
378 SvREADONLY_off(tmpForm);
379 parseres = doparseform(tmpForm);
380 SvREADONLY_on(tmpForm);
383 parseres = doparseform(tmpForm);
387 SvPV_force(PL_formtarget, len);
388 if (DO_UTF8(PL_formtarget))
390 t = SvGROW(PL_formtarget, len + fudge + 1); /* XXX SvCUR bad */
392 f = SvPV(tmpForm, len);
393 /* need to jump to the next word */
394 s = f + len + WORD_ALIGN - SvCUR(tmpForm) % WORD_ALIGN;
403 case FF_LITERAL: arg = fpc[1]; name = "LITERAL"; break;
404 case FF_BLANK: arg = fpc[1]; name = "BLANK"; break;
405 case FF_SKIP: arg = fpc[1]; name = "SKIP"; break;
406 case FF_FETCH: arg = fpc[1]; name = "FETCH"; break;
407 case FF_DECIMAL: arg = fpc[1]; name = "DECIMAL"; break;
409 case FF_CHECKNL: name = "CHECKNL"; break;
410 case FF_CHECKCHOP: name = "CHECKCHOP"; break;
411 case FF_SPACE: name = "SPACE"; break;
412 case FF_HALFSPACE: name = "HALFSPACE"; break;
413 case FF_ITEM: name = "ITEM"; break;
414 case FF_CHOP: name = "CHOP"; break;
415 case FF_LINEGLOB: name = "LINEGLOB"; break;
416 case FF_NEWLINE: name = "NEWLINE"; break;
417 case FF_MORE: name = "MORE"; break;
418 case FF_LINEMARK: name = "LINEMARK"; break;
419 case FF_END: name = "END"; break;
420 case FF_0DECIMAL: name = "0DECIMAL"; break;
421 case FF_LINESNGL: name = "LINESNGL"; break;
424 PerlIO_printf(Perl_debug_log, "%-16s%ld\n", name, (long) arg);
426 PerlIO_printf(Perl_debug_log, "%-16s\n", name);
437 if (targ_is_utf8 && !SvUTF8(tmpForm)) {
438 SvCUR_set(PL_formtarget, t - SvPVX(PL_formtarget));
440 sv_catpvn_utf8_upgrade(PL_formtarget, f, arg, nsv);
441 t = SvEND(PL_formtarget);
444 if (!targ_is_utf8 && DO_UTF8(tmpForm)) {
445 SvCUR_set(PL_formtarget, t - SvPVX(PL_formtarget));
447 sv_utf8_upgrade(PL_formtarget);
448 SvGROW(PL_formtarget, SvCUR(PL_formtarget) + fudge + 1);
449 t = SvEND(PL_formtarget);
469 if (ckWARN(WARN_SYNTAX))
470 Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Not enough format arguments");
475 item = s = SvPV(sv, len);
478 itemsize = sv_len_utf8(sv);
479 if (itemsize != (I32)len) {
481 if (itemsize > fieldsize) {
482 itemsize = fieldsize;
483 itembytes = itemsize;
484 sv_pos_u2b(sv, &itembytes, 0);
488 send = chophere = s + itembytes;
498 sv_pos_b2u(sv, &itemsize);
502 item_is_utf8 = FALSE;
503 if (itemsize > fieldsize)
504 itemsize = fieldsize;
505 send = chophere = s + itemsize;
517 item = s = SvPV(sv, len);
520 itemsize = sv_len_utf8(sv);
521 if (itemsize != (I32)len) {
523 if (itemsize <= fieldsize) {
524 send = chophere = s + itemsize;
536 itemsize = fieldsize;
537 itembytes = itemsize;
538 sv_pos_u2b(sv, &itembytes, 0);
539 send = chophere = s + itembytes;
540 while (s < send || (s == send && isSPACE(*s))) {
550 if (strchr(PL_chopset, *s))
555 itemsize = chophere - item;
556 sv_pos_b2u(sv, &itemsize);
562 item_is_utf8 = FALSE;
563 if (itemsize <= fieldsize) {
564 send = chophere = s + itemsize;
576 itemsize = fieldsize;
577 send = chophere = s + itemsize;
578 while (s < send || (s == send && isSPACE(*s))) {
588 if (strchr(PL_chopset, *s))
593 itemsize = chophere - item;
598 arg = fieldsize - itemsize;
607 arg = fieldsize - itemsize;
621 SvCUR_set(PL_formtarget, t - SvPVX(PL_formtarget));
623 sv_utf8_upgrade(PL_formtarget);
624 SvGROW(PL_formtarget, SvCUR(PL_formtarget) + fudge + 1);
625 t = SvEND(PL_formtarget);
629 if (UTF8_IS_CONTINUED(*s)) {
630 STRLEN skip = UTF8SKIP(s);
647 if ( !((*t++ = *s++) & ~31) )
653 if (targ_is_utf8 && !item_is_utf8) {
654 SvCUR_set(PL_formtarget, t - SvPVX(PL_formtarget));
656 sv_catpvn_utf8_upgrade(PL_formtarget, s, arg, nsv);
657 for (; t < SvEND(PL_formtarget); t++) {
670 int ch = *t++ = *s++;
673 if ( !((*t++ = *s++) & ~31) )
682 while (*s && isSPACE(*s))
696 item = s = SvPV(sv, len);
698 if ((item_is_utf8 = DO_UTF8(sv)))
699 itemsize = sv_len_utf8(sv);
701 bool chopped = FALSE;
704 chophere = s + itemsize;
720 SvCUR_set(PL_formtarget, t - SvPVX(PL_formtarget));
722 SvUTF8_on(PL_formtarget);
724 SvCUR_set(sv, chophere - item);
725 sv_catsv(PL_formtarget, sv);
726 SvCUR_set(sv, itemsize);
728 sv_catsv(PL_formtarget, sv);
730 SvCUR_set(PL_formtarget, SvCUR(PL_formtarget) - 1);
731 SvGROW(PL_formtarget, SvCUR(PL_formtarget) + fudge + 1);
732 t = SvPVX(PL_formtarget) + SvCUR(PL_formtarget);
740 #if defined(USE_LONG_DOUBLE)
741 fmt = (arg & 256) ? "%#0*.*" PERL_PRIfldbl : "%0*.*" PERL_PRIfldbl;
743 fmt = (arg & 256) ? "%#0*.*f" : "%0*.*f";
748 #if defined(USE_LONG_DOUBLE)
749 fmt = (arg & 256) ? "%#*.*" PERL_PRIfldbl : "%*.*" PERL_PRIfldbl;
751 fmt = (arg & 256) ? "%#*.*f" : "%*.*f";
754 /* If the field is marked with ^ and the value is undefined,
756 if ((arg & 512) && !SvOK(sv)) {
764 /* overflow evidence */
765 if (num_overflow(value, fieldsize, arg)) {
771 /* Formats aren't yet marked for locales, so assume "yes". */
773 STORE_NUMERIC_STANDARD_SET_LOCAL();
774 sprintf(t, fmt, (int) fieldsize, (int) arg & 255, value);
775 RESTORE_NUMERIC_STANDARD();
782 while (t-- > linemark && *t == ' ') ;
790 if (arg) { /* repeat until fields exhausted? */
792 SvCUR_set(PL_formtarget, t - SvPVX(PL_formtarget));
793 lines += FmLINES(PL_formtarget);
796 if (strnEQ(linemark, linemark - arg, arg))
797 DIE(aTHX_ "Runaway format");
800 SvUTF8_on(PL_formtarget);
801 FmLINES(PL_formtarget) = lines;
803 RETURNOP(cLISTOP->op_first);
816 while (*s && isSPACE(*s) && s < send)
820 arg = fieldsize - itemsize;
827 if (strnEQ(s," ",3)) {
828 while (s > SvPVX(PL_formtarget) && isSPACE(s[-1]))
839 SvCUR_set(PL_formtarget, t - SvPVX(PL_formtarget));
841 SvUTF8_on(PL_formtarget);
842 FmLINES(PL_formtarget) += lines;
854 if (PL_stack_base + *PL_markstack_ptr == SP) {
856 if (GIMME_V == G_SCALAR)
857 XPUSHs(sv_2mortal(newSViv(0)));
858 RETURNOP(PL_op->op_next->op_next);
860 PL_stack_sp = PL_stack_base + *PL_markstack_ptr + 1;
861 pp_pushmark(); /* push dst */
862 pp_pushmark(); /* push src */
863 ENTER; /* enter outer scope */
866 if (PL_op->op_private & OPpGREP_LEX)
867 SAVESPTR(PAD_SVl(PL_op->op_targ));
870 ENTER; /* enter inner scope */
873 src = PL_stack_base[*PL_markstack_ptr];
875 if (PL_op->op_private & OPpGREP_LEX)
876 PAD_SVl(PL_op->op_targ) = src;
881 if (PL_op->op_type == OP_MAPSTART)
882 pp_pushmark(); /* push top */
883 return ((LOGOP*)PL_op->op_next)->op_other;
888 DIE(aTHX_ "panic: mapstart"); /* uses grepstart */
895 I32 items = (SP - PL_stack_base) - *PL_markstack_ptr; /* how many new items */
901 /* first, move source pointer to the next item in the source list */
902 ++PL_markstack_ptr[-1];
904 /* if there are new items, push them into the destination list */
905 if (items && gimme != G_VOID) {
906 /* might need to make room back there first */
907 if (items > PL_markstack_ptr[-1] - PL_markstack_ptr[-2]) {
908 /* XXX this implementation is very pessimal because the stack
909 * is repeatedly extended for every set of items. Is possible
910 * to do this without any stack extension or copying at all
911 * by maintaining a separate list over which the map iterates
912 * (like foreach does). --gsar */
914 /* everything in the stack after the destination list moves
915 * towards the end the stack by the amount of room needed */
916 shift = items - (PL_markstack_ptr[-1] - PL_markstack_ptr[-2]);
918 /* items to shift up (accounting for the moved source pointer) */
919 count = (SP - PL_stack_base) - (PL_markstack_ptr[-1] - 1);
921 /* This optimization is by Ben Tilly and it does
922 * things differently from what Sarathy (gsar)
923 * is describing. The downside of this optimization is
924 * that leaves "holes" (uninitialized and hopefully unused areas)
925 * to the Perl stack, but on the other hand this
926 * shouldn't be a problem. If Sarathy's idea gets
927 * implemented, this optimization should become
928 * irrelevant. --jhi */
930 shift = count; /* Avoid shifting too often --Ben Tilly */
935 PL_markstack_ptr[-1] += shift;
936 *PL_markstack_ptr += shift;
940 /* copy the new items down to the destination list */
941 dst = PL_stack_base + (PL_markstack_ptr[-2] += items) - 1;
942 if (gimme == G_ARRAY) {
944 *dst-- = SvTEMP(TOPs) ? POPs : sv_mortalcopy(POPs);
947 /* scalar context: we don't care about which values map returns
948 * (we use undef here). And so we certainly don't want to do mortal
949 * copies of meaningless values. */
950 while (items-- > 0) {
952 *dst-- = &PL_sv_undef;
956 LEAVE; /* exit inner scope */
959 if (PL_markstack_ptr[-1] > *PL_markstack_ptr) {
961 (void)POPMARK; /* pop top */
962 LEAVE; /* exit outer scope */
963 (void)POPMARK; /* pop src */
964 items = --*PL_markstack_ptr - PL_markstack_ptr[-1];
965 (void)POPMARK; /* pop dst */
966 SP = PL_stack_base + POPMARK; /* pop original mark */
967 if (gimme == G_SCALAR) {
968 if (PL_op->op_private & OPpGREP_LEX) {
969 SV* sv = sv_newmortal();
978 else if (gimme == G_ARRAY)
985 ENTER; /* enter inner scope */
988 /* set $_ to the new source item */
989 src = PL_stack_base[PL_markstack_ptr[-1]];
991 if (PL_op->op_private & OPpGREP_LEX)
992 PAD_SVl(PL_op->op_targ) = src;
996 RETURNOP(cLOGOP->op_other);
1004 if (GIMME == G_ARRAY)
1006 if (SvTRUEx(PAD_SV(PL_op->op_targ)))
1007 return cLOGOP->op_other;
1016 if (GIMME == G_ARRAY) {
1017 RETURNOP(((LOGOP*)cUNOP->op_first)->op_other);
1021 SV *targ = PAD_SV(PL_op->op_targ);
1024 if (PL_op->op_private & OPpFLIP_LINENUM) {
1025 if (GvIO(PL_last_in_gv)) {
1026 flip = SvIV(sv) == (IV)IoLINES(GvIOp(PL_last_in_gv));
1029 GV *gv = gv_fetchpv(".", TRUE, SVt_PV);
1030 if (gv && GvSV(gv)) flip = SvIV(sv) == SvIV(GvSV(gv));
1036 sv_setiv(PAD_SV(cUNOP->op_first->op_targ), 1);
1037 if (PL_op->op_flags & OPf_SPECIAL) {
1045 RETURNOP(((LOGOP*)cUNOP->op_first)->op_other);
1054 /* This code tries to decide if "$left .. $right" should use the
1055 magical string increment, or if the range is numeric (we make
1056 an exception for .."0" [#18165]). AMS 20021031. */
1058 #define RANGE_IS_NUMERIC(left,right) ( \
1059 SvNIOKp(left) || (SvOK(left) && !SvPOKp(left)) || \
1060 SvNIOKp(right) || (SvOK(right) && !SvPOKp(right)) || \
1061 (looks_like_number(left) && SvPOKp(left) && *SvPVX(left) != '0' && \
1062 looks_like_number(right)))
1068 if (GIMME == G_ARRAY) {
1074 if (SvGMAGICAL(left))
1076 if (SvGMAGICAL(right))
1079 if (RANGE_IS_NUMERIC(left,right)) {
1080 if (SvNV(left) < IV_MIN || SvNV(right) > IV_MAX)
1081 DIE(aTHX_ "Range iterator outside integer range");
1092 sv = sv_2mortal(newSViv(i++));
1097 SV *final = sv_mortalcopy(right);
1099 char *tmps = SvPV(final, len);
1101 sv = sv_mortalcopy(left);
1103 while (!SvNIOKp(sv) && SvCUR(sv) <= len) {
1105 if (strEQ(SvPVX(sv),tmps))
1107 sv = sv_2mortal(newSVsv(sv));
1114 SV *targ = PAD_SV(cUNOP->op_first->op_targ);
1118 if (PL_op->op_private & OPpFLIP_LINENUM) {
1119 if (GvIO(PL_last_in_gv)) {
1120 flop = SvIV(sv) == (IV)IoLINES(GvIOp(PL_last_in_gv));
1123 GV *gv = gv_fetchpv(".", TRUE, SVt_PV);
1124 if (gv && GvSV(gv)) flop = SvIV(sv) == SvIV(GvSV(gv));
1132 sv_setiv(PAD_SV(((UNOP*)cUNOP->op_first)->op_first->op_targ), 0);
1133 sv_catpv(targ, "E0");
1143 static char *context_name[] = {
1154 S_dopoptolabel(pTHX_ char *label)
1157 register PERL_CONTEXT *cx;
1159 for (i = cxstack_ix; i >= 0; i--) {
1161 switch (CxTYPE(cx)) {
1167 if (ckWARN(WARN_EXITING))
1168 Perl_warner(aTHX_ packWARN(WARN_EXITING), "Exiting %s via %s",
1169 context_name[CxTYPE(cx)], OP_NAME(PL_op));
1170 if (CxTYPE(cx) == CXt_NULL)
1174 if (!cx->blk_loop.label ||
1175 strNE(label, cx->blk_loop.label) ) {
1176 DEBUG_l(Perl_deb(aTHX_ "(Skipping label #%ld %s)\n",
1177 (long)i, cx->blk_loop.label));
1180 DEBUG_l( Perl_deb(aTHX_ "(Found label #%ld %s)\n", (long)i, label));
1188 Perl_dowantarray(pTHX)
1190 I32 gimme = block_gimme();
1191 return (gimme == G_VOID) ? G_SCALAR : gimme;
1195 Perl_block_gimme(pTHX)
1199 cxix = dopoptosub(cxstack_ix);
1203 switch (cxstack[cxix].blk_gimme) {
1211 Perl_croak(aTHX_ "panic: bad gimme: %d\n", cxstack[cxix].blk_gimme);
1218 Perl_is_lvalue_sub(pTHX)
1222 cxix = dopoptosub(cxstack_ix);
1223 assert(cxix >= 0); /* We should only be called from inside subs */
1225 if (cxstack[cxix].blk_sub.lval && CvLVALUE(cxstack[cxix].blk_sub.cv))
1226 return cxstack[cxix].blk_sub.lval;
1232 S_dopoptosub(pTHX_ I32 startingblock)
1234 return dopoptosub_at(cxstack, startingblock);
1238 S_dopoptosub_at(pTHX_ PERL_CONTEXT *cxstk, I32 startingblock)
1241 register PERL_CONTEXT *cx;
1242 for (i = startingblock; i >= 0; i--) {
1244 switch (CxTYPE(cx)) {
1250 DEBUG_l( Perl_deb(aTHX_ "(Found sub #%ld)\n", (long)i));
1258 S_dopoptoeval(pTHX_ I32 startingblock)
1261 register PERL_CONTEXT *cx;
1262 for (i = startingblock; i >= 0; i--) {
1264 switch (CxTYPE(cx)) {
1268 DEBUG_l( Perl_deb(aTHX_ "(Found eval #%ld)\n", (long)i));
1276 S_dopoptoloop(pTHX_ I32 startingblock)
1279 register PERL_CONTEXT *cx;
1280 for (i = startingblock; i >= 0; i--) {
1282 switch (CxTYPE(cx)) {
1288 if (ckWARN(WARN_EXITING))
1289 Perl_warner(aTHX_ packWARN(WARN_EXITING), "Exiting %s via %s",
1290 context_name[CxTYPE(cx)], OP_NAME(PL_op));
1291 if ((CxTYPE(cx)) == CXt_NULL)
1295 DEBUG_l( Perl_deb(aTHX_ "(Found loop #%ld)\n", (long)i));
1303 Perl_dounwind(pTHX_ I32 cxix)
1305 register PERL_CONTEXT *cx;
1308 while (cxstack_ix > cxix) {
1310 cx = &cxstack[cxstack_ix];
1311 DEBUG_l(PerlIO_printf(Perl_debug_log, "Unwinding block %ld, type %s\n",
1312 (long) cxstack_ix, PL_block_type[CxTYPE(cx)]));
1313 /* Note: we don't need to restore the base context info till the end. */
1314 switch (CxTYPE(cx)) {
1317 continue; /* not break */
1339 Perl_qerror(pTHX_ SV *err)
1342 sv_catsv(ERRSV, err);
1344 sv_catsv(PL_errors, err);
1346 Perl_warn(aTHX_ "%"SVf, err);
1351 Perl_die_where(pTHX_ char *message, STRLEN msglen)
1357 register PERL_CONTEXT *cx;
1362 if (PL_in_eval & EVAL_KEEPERR) {
1363 static char prefix[] = "\t(in cleanup) ";
1368 else if (SvCUR(err) >= sizeof(prefix)+msglen-1) {
1371 if (*e != *message || strNE(e,message))
1375 SvGROW(err, SvCUR(err)+sizeof(prefix)+msglen);
1376 sv_catpvn(err, prefix, sizeof(prefix)-1);
1377 sv_catpvn(err, message, msglen);
1378 if (ckWARN(WARN_MISC)) {
1379 STRLEN start = SvCUR(err)-msglen-sizeof(prefix)+1;
1380 Perl_warner(aTHX_ packWARN(WARN_MISC), SvPVX(err)+start);
1385 sv_setpvn(ERRSV, message, msglen);
1389 while ((cxix = dopoptoeval(cxstack_ix)) < 0
1390 && PL_curstackinfo->si_prev)
1399 if (cxix < cxstack_ix)
1402 POPBLOCK(cx,PL_curpm);
1403 if (CxTYPE(cx) != CXt_EVAL) {
1405 message = SvPVx(ERRSV, msglen);
1406 PerlIO_write(Perl_error_log, "panic: die ", 11);
1407 PerlIO_write(Perl_error_log, message, msglen);
1412 if (gimme == G_SCALAR)
1413 *++newsp = &PL_sv_undef;
1414 PL_stack_sp = newsp;
1418 /* LEAVE could clobber PL_curcop (see save_re_context())
1419 * XXX it might be better to find a way to avoid messing with
1420 * PL_curcop in save_re_context() instead, but this is a more
1421 * minimal fix --GSAR */
1422 PL_curcop = cx->blk_oldcop;
1424 if (optype == OP_REQUIRE) {
1425 char* msg = SvPVx(ERRSV, n_a);
1426 SV *nsv = cx->blk_eval.old_namesv;
1427 (void)hv_store(GvHVn(PL_incgv), SvPVX(nsv), SvCUR(nsv),
1429 DIE(aTHX_ "%sCompilation failed in require",
1430 *msg ? msg : "Unknown error\n");
1432 return pop_return();
1436 message = SvPVx(ERRSV, msglen);
1438 write_to_stderr(message, msglen);
1447 if (SvTRUE(left) != SvTRUE(right))
1459 RETURNOP(cLOGOP->op_other);
1468 RETURNOP(cLOGOP->op_other);
1477 if (!sv || !SvANY(sv)) {
1478 RETURNOP(cLOGOP->op_other);
1481 switch (SvTYPE(sv)) {
1483 if (AvMAX(sv) >= 0 || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied)))
1487 if (HvARRAY(sv) || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied)))
1491 if (CvROOT(sv) || CvXSUB(sv))
1501 RETURNOP(cLOGOP->op_other);
1507 register I32 cxix = dopoptosub(cxstack_ix);
1508 register PERL_CONTEXT *cx;
1509 register PERL_CONTEXT *ccstack = cxstack;
1510 PERL_SI *top_si = PL_curstackinfo;
1521 /* we may be in a higher stacklevel, so dig down deeper */
1522 while (cxix < 0 && top_si->si_type != PERLSI_MAIN) {
1523 top_si = top_si->si_prev;
1524 ccstack = top_si->si_cxstack;
1525 cxix = dopoptosub_at(ccstack, top_si->si_cxix);
1528 if (GIMME != G_ARRAY) {
1534 if (PL_DBsub && cxix >= 0 &&
1535 ccstack[cxix].blk_sub.cv == GvCV(PL_DBsub))
1539 cxix = dopoptosub_at(ccstack, cxix - 1);
1542 cx = &ccstack[cxix];
1543 if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) {
1544 dbcxix = dopoptosub_at(ccstack, cxix - 1);
1545 /* We expect that ccstack[dbcxix] is CXt_SUB, anyway, the
1546 field below is defined for any cx. */
1547 if (PL_DBsub && dbcxix >= 0 && ccstack[dbcxix].blk_sub.cv == GvCV(PL_DBsub))
1548 cx = &ccstack[dbcxix];
1551 stashname = CopSTASHPV(cx->blk_oldcop);
1552 if (GIMME != G_ARRAY) {
1555 PUSHs(&PL_sv_undef);
1558 sv_setpv(TARG, stashname);
1567 PUSHs(&PL_sv_undef);
1569 PUSHs(sv_2mortal(newSVpv(stashname, 0)));
1570 PUSHs(sv_2mortal(newSVpv(OutCopFILE(cx->blk_oldcop), 0)));
1571 PUSHs(sv_2mortal(newSViv((I32)CopLINE(cx->blk_oldcop))));
1574 if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) {
1575 GV *cvgv = CvGV(ccstack[cxix].blk_sub.cv);
1576 /* So is ccstack[dbcxix]. */
1579 gv_efullname3(sv, cvgv, Nullch);
1580 PUSHs(sv_2mortal(sv));
1581 PUSHs(sv_2mortal(newSViv((I32)cx->blk_sub.hasargs)));
1584 PUSHs(sv_2mortal(newSVpvn("(unknown)",9)));
1585 PUSHs(sv_2mortal(newSViv((I32)cx->blk_sub.hasargs)));
1589 PUSHs(sv_2mortal(newSVpvn("(eval)",6)));
1590 PUSHs(sv_2mortal(newSViv(0)));
1592 gimme = (I32)cx->blk_gimme;
1593 if (gimme == G_VOID)
1594 PUSHs(&PL_sv_undef);
1596 PUSHs(sv_2mortal(newSViv(gimme & G_ARRAY)));
1597 if (CxTYPE(cx) == CXt_EVAL) {
1599 if (cx->blk_eval.old_op_type == OP_ENTEREVAL) {
1600 PUSHs(cx->blk_eval.cur_text);
1604 else if (cx->blk_eval.old_namesv) {
1605 PUSHs(sv_2mortal(newSVsv(cx->blk_eval.old_namesv)));
1608 /* eval BLOCK (try blocks have old_namesv == 0) */
1610 PUSHs(&PL_sv_undef);
1611 PUSHs(&PL_sv_undef);
1615 PUSHs(&PL_sv_undef);
1616 PUSHs(&PL_sv_undef);
1618 if (CxTYPE(cx) == CXt_SUB && cx->blk_sub.hasargs
1619 && CopSTASH_eq(PL_curcop, PL_debstash))
1621 AV *ary = cx->blk_sub.argarray;
1622 int off = AvARRAY(ary) - AvALLOC(ary);
1626 PL_dbargs = GvAV(gv_AVadd(tmpgv = gv_fetchpv("DB::args", TRUE,
1629 AvREAL_off(PL_dbargs); /* XXX should be REIFY (see av.h) */
1632 if (AvMAX(PL_dbargs) < AvFILLp(ary) + off)
1633 av_extend(PL_dbargs, AvFILLp(ary) + off);
1634 Copy(AvALLOC(ary), AvARRAY(PL_dbargs), AvFILLp(ary) + 1 + off, SV*);
1635 AvFILLp(PL_dbargs) = AvFILLp(ary) + off;
1637 /* XXX only hints propagated via op_private are currently
1638 * visible (others are not easily accessible, since they
1639 * use the global PL_hints) */
1640 PUSHs(sv_2mortal(newSViv((I32)cx->blk_oldcop->op_private &
1641 HINT_PRIVATE_MASK)));
1644 SV * old_warnings = cx->blk_oldcop->cop_warnings ;
1646 if (old_warnings == pWARN_NONE ||
1647 (old_warnings == pWARN_STD && (PL_dowarn & G_WARN_ON) == 0))
1648 mask = newSVpvn(WARN_NONEstring, WARNsize) ;
1649 else if (old_warnings == pWARN_ALL ||
1650 (old_warnings == pWARN_STD && PL_dowarn & G_WARN_ON)) {
1651 /* Get the bit mask for $warnings::Bits{all}, because
1652 * it could have been extended by warnings::register */
1654 HV *bits = get_hv("warnings::Bits", FALSE);
1655 if (bits && (bits_all=hv_fetch(bits, "all", 3, FALSE))) {
1656 mask = newSVsv(*bits_all);
1659 mask = newSVpvn(WARN_ALLstring, WARNsize) ;
1663 mask = newSVsv(old_warnings);
1664 PUSHs(sv_2mortal(mask));
1679 sv_reset(tmps, CopSTASH(PL_curcop));
1689 /* like pp_nextstate, but used instead when the debugger is active */
1693 PL_curcop = (COP*)PL_op;
1694 TAINT_NOT; /* Each statement is presumed innocent */
1695 PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp;
1698 if (PL_op->op_flags & OPf_SPECIAL /* breakpoint */
1699 || SvIV(PL_DBsingle) || SvIV(PL_DBsignal) || SvIV(PL_DBtrace))
1703 register PERL_CONTEXT *cx;
1704 I32 gimme = G_ARRAY;
1711 DIE(aTHX_ "No DB::DB routine defined");
1713 if (CvDEPTH(cv) >= 1 && !(PL_debug & DEBUG_DB_RECURSE_FLAG))
1714 /* don't do recursive DB::DB call */
1726 push_return(PL_op->op_next);
1727 PUSHBLOCK(cx, CXt_SUB, SP);
1730 PAD_SET_CUR(CvPADLIST(cv),1);
1731 RETURNOP(CvSTART(cv));
1745 register PERL_CONTEXT *cx;
1746 I32 gimme = GIMME_V;
1748 U32 cxtype = CXt_LOOP;
1756 if (PL_op->op_targ) {
1757 if (PL_op->op_private & OPpLVAL_INTRO) { /* for my $x (...) */
1758 SvPADSTALE_off(PAD_SVl(PL_op->op_targ));
1759 SAVESETSVFLAGS(PAD_SVl(PL_op->op_targ),
1760 SVs_PADSTALE, SVs_PADSTALE);
1762 #ifndef USE_ITHREADS
1763 svp = &PAD_SVl(PL_op->op_targ); /* "my" variable */
1766 SAVEPADSV(PL_op->op_targ);
1767 iterdata = INT2PTR(void*, PL_op->op_targ);
1768 cxtype |= CXp_PADVAR;
1773 svp = &GvSV(gv); /* symbol table variable */
1774 SAVEGENERICSV(*svp);
1777 iterdata = (void*)gv;
1783 PUSHBLOCK(cx, cxtype, SP);
1785 PUSHLOOP(cx, iterdata, MARK);
1787 PUSHLOOP(cx, svp, MARK);
1789 if (PL_op->op_flags & OPf_STACKED) {
1790 cx->blk_loop.iterary = (AV*)SvREFCNT_inc(POPs);
1791 if (SvTYPE(cx->blk_loop.iterary) != SVt_PVAV) {
1793 if (RANGE_IS_NUMERIC(sv,(SV*)cx->blk_loop.iterary)) {
1794 if (SvNV(sv) < IV_MIN ||
1795 SvNV((SV*)cx->blk_loop.iterary) >= IV_MAX)
1796 DIE(aTHX_ "Range iterator outside integer range");
1797 cx->blk_loop.iterix = SvIV(sv);
1798 cx->blk_loop.itermax = SvIV((SV*)cx->blk_loop.iterary);
1801 cx->blk_loop.iterlval = newSVsv(sv);
1805 cx->blk_loop.iterary = PL_curstack;
1806 AvFILLp(PL_curstack) = SP - PL_stack_base;
1807 cx->blk_loop.iterix = MARK - PL_stack_base;
1816 register PERL_CONTEXT *cx;
1817 I32 gimme = GIMME_V;
1823 PUSHBLOCK(cx, CXt_LOOP, SP);
1824 PUSHLOOP(cx, 0, SP);
1832 register PERL_CONTEXT *cx;
1840 newsp = PL_stack_base + cx->blk_loop.resetsp;
1843 if (gimme == G_VOID)
1845 else if (gimme == G_SCALAR) {
1847 *++newsp = sv_mortalcopy(*SP);
1849 *++newsp = &PL_sv_undef;
1853 *++newsp = sv_mortalcopy(*++mark);
1854 TAINT_NOT; /* Each item is independent */
1860 POPLOOP(cx); /* Stack values are safe: release loop vars ... */
1861 PL_curpm = newpm; /* ... and pop $1 et al */
1873 register PERL_CONTEXT *cx;
1874 bool popsub2 = FALSE;
1875 bool clear_errsv = FALSE;
1882 if (PL_curstackinfo->si_type == PERLSI_SORT) {
1883 if (cxstack_ix == PL_sortcxix
1884 || dopoptosub(cxstack_ix) <= PL_sortcxix)
1886 if (cxstack_ix > PL_sortcxix)
1887 dounwind(PL_sortcxix);
1888 AvARRAY(PL_curstack)[1] = *SP;
1889 PL_stack_sp = PL_stack_base + 1;
1894 cxix = dopoptosub(cxstack_ix);
1896 DIE(aTHX_ "Can't return outside a subroutine");
1897 if (cxix < cxstack_ix)
1901 switch (CxTYPE(cx)) {
1904 cxstack_ix++; /* preserve cx entry on stack for use by POPSUB */
1907 if (!(PL_in_eval & EVAL_KEEPERR))
1913 if (optype == OP_REQUIRE &&
1914 (MARK == SP || (gimme == G_SCALAR && !SvTRUE(*SP))) )
1916 /* Unassume the success we assumed earlier. */
1917 SV *nsv = cx->blk_eval.old_namesv;
1918 (void)hv_delete(GvHVn(PL_incgv), SvPVX(nsv), SvCUR(nsv), G_DISCARD);
1919 DIE(aTHX_ "%"SVf" did not return a true value", nsv);
1926 DIE(aTHX_ "panic: return");
1930 if (gimme == G_SCALAR) {
1933 if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) {
1935 *++newsp = SvREFCNT_inc(*SP);
1940 sv = SvREFCNT_inc(*SP); /* FREETMPS could clobber it */
1942 *++newsp = sv_mortalcopy(sv);
1947 *++newsp = (SvTEMP(*SP)) ? *SP : sv_mortalcopy(*SP);
1950 *++newsp = sv_mortalcopy(*SP);
1953 *++newsp = &PL_sv_undef;
1955 else if (gimme == G_ARRAY) {
1956 while (++MARK <= SP) {
1957 *++newsp = (popsub2 && SvTEMP(*MARK))
1958 ? *MARK : sv_mortalcopy(*MARK);
1959 TAINT_NOT; /* Each item is independent */
1962 PL_stack_sp = newsp;
1965 /* Stack values are safe: */
1968 POPSUB(cx,sv); /* release CV and @_ ... */
1972 PL_curpm = newpm; /* ... and pop $1 et al */
1977 return pop_return();
1984 register PERL_CONTEXT *cx;
1994 if (PL_op->op_flags & OPf_SPECIAL) {
1995 cxix = dopoptoloop(cxstack_ix);
1997 DIE(aTHX_ "Can't \"last\" outside a loop block");
2000 cxix = dopoptolabel(cPVOP->op_pv);
2002 DIE(aTHX_ "Label not found for \"last %s\"", cPVOP->op_pv);
2004 if (cxix < cxstack_ix)
2008 cxstack_ix++; /* temporarily protect top context */
2010 switch (CxTYPE(cx)) {
2013 newsp = PL_stack_base + cx->blk_loop.resetsp;
2014 nextop = cx->blk_loop.last_op->op_next;
2018 nextop = pop_return();
2022 nextop = pop_return();
2026 nextop = pop_return();
2029 DIE(aTHX_ "panic: last");
2033 if (gimme == G_SCALAR) {
2035 *++newsp = ((pop2 == CXt_SUB) && SvTEMP(*SP))
2036 ? *SP : sv_mortalcopy(*SP);
2038 *++newsp = &PL_sv_undef;
2040 else if (gimme == G_ARRAY) {
2041 while (++MARK <= SP) {
2042 *++newsp = ((pop2 == CXt_SUB) && SvTEMP(*MARK))
2043 ? *MARK : sv_mortalcopy(*MARK);
2044 TAINT_NOT; /* Each item is independent */
2052 /* Stack values are safe: */
2055 POPLOOP(cx); /* release loop vars ... */
2059 POPSUB(cx,sv); /* release CV and @_ ... */
2062 PL_curpm = newpm; /* ... and pop $1 et al */
2071 register PERL_CONTEXT *cx;
2074 if (PL_op->op_flags & OPf_SPECIAL) {
2075 cxix = dopoptoloop(cxstack_ix);
2077 DIE(aTHX_ "Can't \"next\" outside a loop block");
2080 cxix = dopoptolabel(cPVOP->op_pv);
2082 DIE(aTHX_ "Label not found for \"next %s\"", cPVOP->op_pv);
2084 if (cxix < cxstack_ix)
2087 /* clear off anything above the scope we're re-entering, but
2088 * save the rest until after a possible continue block */
2089 inner = PL_scopestack_ix;
2091 if (PL_scopestack_ix < inner)
2092 leave_scope(PL_scopestack[PL_scopestack_ix]);
2093 return cx->blk_loop.next_op;
2099 register PERL_CONTEXT *cx;
2102 if (PL_op->op_flags & OPf_SPECIAL) {
2103 cxix = dopoptoloop(cxstack_ix);
2105 DIE(aTHX_ "Can't \"redo\" outside a loop block");
2108 cxix = dopoptolabel(cPVOP->op_pv);
2110 DIE(aTHX_ "Label not found for \"redo %s\"", cPVOP->op_pv);
2112 if (cxix < cxstack_ix)
2116 oldsave = PL_scopestack[PL_scopestack_ix - 1];
2117 LEAVE_SCOPE(oldsave);
2118 return cx->blk_loop.redo_op;
2122 S_dofindlabel(pTHX_ OP *o, char *label, OP **opstack, OP **oplimit)
2126 static char too_deep[] = "Target of goto is too deeply nested";
2129 Perl_croak(aTHX_ too_deep);
2130 if (o->op_type == OP_LEAVE ||
2131 o->op_type == OP_SCOPE ||
2132 o->op_type == OP_LEAVELOOP ||
2133 o->op_type == OP_LEAVESUB ||
2134 o->op_type == OP_LEAVETRY)
2136 *ops++ = cUNOPo->op_first;
2138 Perl_croak(aTHX_ too_deep);
2141 if (o->op_flags & OPf_KIDS) {
2142 /* First try all the kids at this level, since that's likeliest. */
2143 for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) {
2144 if ((kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) &&
2145 kCOP->cop_label && strEQ(kCOP->cop_label, label))
2148 for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) {
2149 if (kid == PL_lastgotoprobe)
2151 if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) {
2154 else if (ops[-1]->op_type == OP_NEXTSTATE ||
2155 ops[-1]->op_type == OP_DBSTATE)
2160 if ((o = dofindlabel(kid, label, ops, oplimit)))
2179 register PERL_CONTEXT *cx;
2180 #define GOTO_DEPTH 64
2181 OP *enterops[GOTO_DEPTH];
2183 int do_dump = (PL_op->op_type == OP_DUMP);
2184 static char must_have_label[] = "goto must have label";
2188 if (PL_op->op_flags & OPf_STACKED) {
2192 /* This egregious kludge implements goto &subroutine */
2193 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVCV) {
2195 register PERL_CONTEXT *cx;
2196 CV* cv = (CV*)SvRV(sv);
2202 if (!CvROOT(cv) && !CvXSUB(cv)) {
2207 /* autoloaded stub? */
2208 if (cv != GvCV(gv) && (cv = GvCV(gv)))
2210 autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv),
2211 GvNAMELEN(gv), FALSE);
2212 if (autogv && (cv = GvCV(autogv)))
2214 tmpstr = sv_newmortal();
2215 gv_efullname3(tmpstr, gv, Nullch);
2216 DIE(aTHX_ "Goto undefined subroutine &%"SVf"",tmpstr);
2218 DIE(aTHX_ "Goto undefined subroutine");
2221 /* First do some returnish stuff. */
2222 SvREFCNT_inc(cv); /* avoid premature free during unwind */
2224 cxix = dopoptosub(cxstack_ix);
2226 DIE(aTHX_ "Can't goto subroutine outside a subroutine");
2227 if (cxix < cxstack_ix)
2231 DIE(aTHX_ "Can't goto subroutine from an eval-string");
2233 if (CxTYPE(cx) == CXt_SUB && cx->blk_sub.hasargs) {
2234 /* put @_ back onto stack */
2235 AV* av = cx->blk_sub.argarray;
2237 items = AvFILLp(av) + 1;
2239 EXTEND(PL_stack_sp, items); /* @_ could have been extended. */
2240 Copy(AvARRAY(av), PL_stack_sp, items, SV*);
2241 PL_stack_sp += items;
2242 SvREFCNT_dec(GvAV(PL_defgv));
2243 GvAV(PL_defgv) = cx->blk_sub.savearray;
2244 /* abandon @_ if it got reified */
2246 oldav = av; /* delay until return */
2248 av_extend(av, items-1);
2249 AvFLAGS(av) = AVf_REIFY;
2250 PAD_SVl(0) = (SV*)(cx->blk_sub.argarray = av);
2255 else if (CvXSUB(cv)) { /* put GvAV(defgv) back onto stack */
2257 av = GvAV(PL_defgv);
2258 items = AvFILLp(av) + 1;
2260 EXTEND(PL_stack_sp, items); /* @_ could have been extended. */
2261 Copy(AvARRAY(av), PL_stack_sp, items, SV*);
2262 PL_stack_sp += items;
2264 if (CxTYPE(cx) == CXt_SUB &&
2265 !(CvDEPTH(cx->blk_sub.cv) = cx->blk_sub.olddepth))
2266 SvREFCNT_dec(cx->blk_sub.cv);
2267 oldsave = PL_scopestack[PL_scopestack_ix - 1];
2268 LEAVE_SCOPE(oldsave);
2270 /* Now do some callish stuff. */
2272 /* For reified @_, delay freeing till return from new sub */
2274 SAVEFREESV((SV*)oldav);
2275 SAVEFREESV(cv); /* later, undo the 'avoid premature free' hack */
2277 #ifdef PERL_XSUB_OLDSTYLE
2278 if (CvOLDSTYLE(cv)) {
2279 I32 (*fp3)(int,int,int);
2284 fp3 = (I32(*)(int,int,int))CvXSUB(cv);
2285 items = (*fp3)(CvXSUBANY(cv).any_i32,
2286 mark - PL_stack_base + 1,
2288 SP = PL_stack_base + items;
2291 #endif /* PERL_XSUB_OLDSTYLE */
2296 PL_stack_sp--; /* There is no cv arg. */
2297 /* Push a mark for the start of arglist */
2299 (void)(*CvXSUB(cv))(aTHX_ cv);
2300 /* Pop the current context like a decent sub should */
2301 POPBLOCK(cx, PL_curpm);
2302 /* Do _not_ use PUTBACK, keep the XSUB's return stack! */
2305 return pop_return();
2308 AV* padlist = CvPADLIST(cv);
2309 if (CxTYPE(cx) == CXt_EVAL) {
2310 PL_in_eval = cx->blk_eval.old_in_eval;
2311 PL_eval_root = cx->blk_eval.old_eval_root;
2312 cx->cx_type = CXt_SUB;
2313 cx->blk_sub.hasargs = 0;
2315 cx->blk_sub.cv = cv;
2316 cx->blk_sub.olddepth = (U16)CvDEPTH(cv);
2319 if (CvDEPTH(cv) < 2)
2320 (void)SvREFCNT_inc(cv);
2322 if (CvDEPTH(cv) == 100 && ckWARN(WARN_RECURSION))
2323 sub_crush_depth(cv);
2324 pad_push(padlist, CvDEPTH(cv), cx->blk_sub.hasargs);
2326 PAD_SET_CUR(padlist, CvDEPTH(cv));
2327 if (cx->blk_sub.hasargs)
2329 AV* av = (AV*)PAD_SVl(0);
2332 cx->blk_sub.savearray = GvAV(PL_defgv);
2333 GvAV(PL_defgv) = (AV*)SvREFCNT_inc(av);
2334 CX_CURPAD_SAVE(cx->blk_sub);
2335 cx->blk_sub.argarray = av;
2338 if (items >= AvMAX(av) + 1) {
2340 if (AvARRAY(av) != ary) {
2341 AvMAX(av) += AvARRAY(av) - AvALLOC(av);
2342 SvPVX(av) = (char*)ary;
2344 if (items >= AvMAX(av) + 1) {
2345 AvMAX(av) = items - 1;
2346 Renew(ary,items+1,SV*);
2348 SvPVX(av) = (char*)ary;
2351 Copy(mark,AvARRAY(av),items,SV*);
2352 AvFILLp(av) = items - 1;
2353 assert(!AvREAL(av));
2360 if (PERLDB_SUB) { /* Checking curstash breaks DProf. */
2362 * We do not care about using sv to call CV;
2363 * it's for informational purposes only.
2365 SV *sv = GvSV(PL_DBsub);
2368 if (PERLDB_SUB_NN) {
2369 (void)SvUPGRADE(sv, SVt_PVIV);
2372 SvIVX(sv) = PTR2IV(cv); /* Do it the quickest way */
2375 gv_efullname3(sv, CvGV(cv), Nullch);
2378 && (gotocv = get_cv("DB::goto", FALSE)) ) {
2379 PUSHMARK( PL_stack_sp );
2380 call_sv((SV*)gotocv, G_SCALAR | G_NODEBUG);
2384 RETURNOP(CvSTART(cv));
2388 label = SvPV(sv,n_a);
2389 if (!(do_dump || *label))
2390 DIE(aTHX_ must_have_label);
2393 else if (PL_op->op_flags & OPf_SPECIAL) {
2395 DIE(aTHX_ must_have_label);
2398 label = cPVOP->op_pv;
2400 if (label && *label) {
2402 bool leaving_eval = FALSE;
2403 bool in_block = FALSE;
2404 PERL_CONTEXT *last_eval_cx = 0;
2408 PL_lastgotoprobe = 0;
2410 for (ix = cxstack_ix; ix >= 0; ix--) {
2412 switch (CxTYPE(cx)) {
2414 leaving_eval = TRUE;
2415 if (!CxTRYBLOCK(cx)) {
2416 gotoprobe = (last_eval_cx ?
2417 last_eval_cx->blk_eval.old_eval_root :
2422 /* else fall through */
2424 gotoprobe = cx->blk_oldcop->op_sibling;
2430 gotoprobe = cx->blk_oldcop->op_sibling;
2433 gotoprobe = PL_main_root;
2436 if (CvDEPTH(cx->blk_sub.cv)) {
2437 gotoprobe = CvROOT(cx->blk_sub.cv);
2443 DIE(aTHX_ "Can't \"goto\" out of a pseudo block");
2446 DIE(aTHX_ "panic: goto");
2447 gotoprobe = PL_main_root;
2451 retop = dofindlabel(gotoprobe, label,
2452 enterops, enterops + GOTO_DEPTH);
2456 PL_lastgotoprobe = gotoprobe;
2459 DIE(aTHX_ "Can't find label %s", label);
2461 /* if we're leaving an eval, check before we pop any frames
2462 that we're not going to punt, otherwise the error
2465 if (leaving_eval && *enterops && enterops[1]) {
2467 for (i = 1; enterops[i]; i++)
2468 if (enterops[i]->op_type == OP_ENTERITER)
2469 DIE(aTHX_ "Can't \"goto\" into the middle of a foreach loop");
2472 /* pop unwanted frames */
2474 if (ix < cxstack_ix) {
2481 oldsave = PL_scopestack[PL_scopestack_ix];
2482 LEAVE_SCOPE(oldsave);
2485 /* push wanted frames */
2487 if (*enterops && enterops[1]) {
2489 ix = enterops[1]->op_type == OP_ENTER && in_block ? 2 : 1;
2490 for (; enterops[ix]; ix++) {
2491 PL_op = enterops[ix];
2492 /* Eventually we may want to stack the needed arguments
2493 * for each op. For now, we punt on the hard ones. */
2494 if (PL_op->op_type == OP_ENTERITER)
2495 DIE(aTHX_ "Can't \"goto\" into the middle of a foreach loop");
2496 CALL_FPTR(PL_op->op_ppaddr)(aTHX);
2504 if (!retop) retop = PL_main_start;
2506 PL_restartop = retop;
2507 PL_do_undump = TRUE;
2511 PL_restartop = 0; /* hmm, must be GNU unexec().. */
2512 PL_do_undump = FALSE;
2528 if (anum == 1 && (PL_op->op_private & OPpEXIT_VMSISH))
2530 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
2533 PL_exit_flags |= PERL_EXIT_EXPECTED;
2535 PUSHs(&PL_sv_undef);
2543 NV value = SvNVx(GvSV(cCOP->cop_gv));
2544 register I32 match = I_32(value);
2547 if (((NV)match) > value)
2548 --match; /* was fractional--truncate other way */
2550 match -= cCOP->uop.scop.scop_offset;
2553 else if (match > cCOP->uop.scop.scop_max)
2554 match = cCOP->uop.scop.scop_max;
2555 PL_op = cCOP->uop.scop.scop_next[match];
2565 PL_op = PL_op->op_next; /* can't assume anything */
2568 match = *(SvPVx(GvSV(cCOP->cop_gv), n_a)) & 255;
2569 match -= cCOP->uop.scop.scop_offset;
2572 else if (match > cCOP->uop.scop.scop_max)
2573 match = cCOP->uop.scop.scop_max;
2574 PL_op = cCOP->uop.scop.scop_next[match];
2583 S_save_lines(pTHX_ AV *array, SV *sv)
2585 register char *s = SvPVX(sv);
2586 register char *send = SvPVX(sv) + SvCUR(sv);
2588 register I32 line = 1;
2590 while (s && s < send) {
2591 SV *tmpstr = NEWSV(85,0);
2593 sv_upgrade(tmpstr, SVt_PVMG);
2594 t = strchr(s, '\n');
2600 sv_setpvn(tmpstr, s, t - s);
2601 av_store(array, line++, tmpstr);
2606 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2608 S_docatch_body(pTHX_ va_list args)
2610 return docatch_body();
2615 S_docatch_body(pTHX)
2622 S_docatch(pTHX_ OP *o)
2627 volatile PERL_SI *cursi = PL_curstackinfo;
2631 assert(CATCH_GET == TRUE);
2635 /* Normally, the leavetry at the end of this block of ops will
2636 * pop an op off the return stack and continue there. By setting
2637 * the op to Nullop, we force an exit from the inner runops()
2640 retop = pop_return();
2641 push_return(Nullop);
2643 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2645 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_docatch_body));
2651 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2657 /* die caught by an inner eval - continue inner loop */
2658 if (PL_restartop && cursi == PL_curstackinfo) {
2659 PL_op = PL_restartop;
2663 /* a die in this eval - continue in outer loop */
2679 Perl_sv_compile_2op(pTHX_ SV *sv, OP** startop, char *code, PAD** padp)
2680 /* sv Text to convert to OP tree. */
2681 /* startop op_free() this to undo. */
2682 /* code Short string id of the caller. */
2684 dSP; /* Make POPBLOCK work. */
2687 I32 gimme = 0; /* SUSPECT - INITIALZE TO WHAT? NI-S */
2691 char tbuf[TYPE_DIGITS(long) + 12 + 10];
2692 char *tmpbuf = tbuf;
2695 CV* runcv = Nullcv; /* initialise to avoid compiler warnings */
2700 /* switch to eval mode */
2702 if (IN_PERL_COMPILETIME) {
2703 SAVECOPSTASH_FREE(&PL_compiling);
2704 CopSTASH_set(&PL_compiling, PL_curstash);
2706 if (PERLDB_NAMEEVAL && CopLINE(PL_curcop)) {
2707 SV *sv = sv_newmortal();
2708 Perl_sv_setpvf(aTHX_ sv, "_<(%.10seval %lu)[%s:%"IVdf"]",
2709 code, (unsigned long)++PL_evalseq,
2710 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
2714 sprintf(tmpbuf, "_<(%.10s_eval %lu)", code, (unsigned long)++PL_evalseq);
2715 SAVECOPFILE_FREE(&PL_compiling);
2716 CopFILE_set(&PL_compiling, tmpbuf+2);
2717 SAVECOPLINE(&PL_compiling);
2718 CopLINE_set(&PL_compiling, 1);
2719 /* XXX For C<eval "...">s within BEGIN {} blocks, this ends up
2720 deleting the eval's FILEGV from the stash before gv_check() runs
2721 (i.e. before run-time proper). To work around the coredump that
2722 ensues, we always turn GvMULTI_on for any globals that were
2723 introduced within evals. See force_ident(). GSAR 96-10-12 */
2724 safestr = savepv(tmpbuf);
2725 SAVEDELETE(PL_defstash, safestr, strlen(safestr));
2727 #ifdef OP_IN_REGISTER
2733 /* we get here either during compilation, or via pp_regcomp at runtime */
2734 runtime = IN_PERL_RUNTIME;
2736 runcv = find_runcv(NULL);
2739 PL_op->op_type = OP_ENTEREVAL;
2740 PL_op->op_flags = 0; /* Avoid uninit warning. */
2741 PUSHBLOCK(cx, CXt_EVAL|(IN_PERL_COMPILETIME ? 0 : CXp_REAL), SP);
2742 PUSHEVAL(cx, 0, Nullgv);
2745 rop = doeval(G_SCALAR, startop, runcv, PL_curcop->cop_seq);
2747 rop = doeval(G_SCALAR, startop, PL_compcv, PL_cop_seqmax);
2748 POPBLOCK(cx,PL_curpm);
2751 (*startop)->op_type = OP_NULL;
2752 (*startop)->op_ppaddr = PL_ppaddr[OP_NULL];
2754 /* XXX DAPM do this properly one year */
2755 *padp = (AV*)SvREFCNT_inc(PL_comppad);
2757 if (IN_PERL_COMPILETIME)
2758 PL_compiling.op_private = (U8)(PL_hints & HINT_PRIVATE_MASK);
2759 #ifdef OP_IN_REGISTER
2767 =for apidoc find_runcv
2769 Locate the CV corresponding to the currently executing sub or eval.
2770 If db_seqp is non_null, skip CVs that are in the DB package and populate
2771 *db_seqp with the cop sequence number at the point that the DB:: code was
2772 entered. (allows debuggers to eval in the scope of the breakpoint rather
2773 than in in the scope of the debuger itself).
2779 Perl_find_runcv(pTHX_ U32 *db_seqp)
2786 *db_seqp = PL_curcop->cop_seq;
2787 for (si = PL_curstackinfo; si; si = si->si_prev) {
2788 for (ix = si->si_cxix; ix >= 0; ix--) {
2789 cx = &(si->si_cxstack[ix]);
2790 if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) {
2791 CV *cv = cx->blk_sub.cv;
2792 /* skip DB:: code */
2793 if (db_seqp && PL_debstash && CvSTASH(cv) == PL_debstash) {
2794 *db_seqp = cx->blk_oldcop->cop_seq;
2799 else if (CxTYPE(cx) == CXt_EVAL && !CxTRYBLOCK(cx))
2807 /* Compile a require/do, an eval '', or a /(?{...})/.
2808 * In the last case, startop is non-null, and contains the address of
2809 * a pointer that should be set to the just-compiled code.
2810 * outside is the lexically enclosing CV (if any) that invoked us.
2813 /* With USE_5005THREADS, eval_owner must be held on entry to doeval */
2815 S_doeval(pTHX_ int gimme, OP** startop, CV* outside, U32 seq)
2820 PL_in_eval = ((saveop && saveop->op_type == OP_REQUIRE)
2821 ? (EVAL_INREQUIRE | (PL_in_eval & EVAL_INEVAL))
2826 SAVESPTR(PL_compcv);
2827 PL_compcv = (CV*)NEWSV(1104,0);
2828 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2829 CvEVAL_on(PL_compcv);
2830 assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_EVAL);
2831 cxstack[cxstack_ix].blk_eval.cv = PL_compcv;
2833 CvOUTSIDE_SEQ(PL_compcv) = seq;
2834 CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc(outside);
2836 /* set up a scratch pad */
2838 CvPADLIST(PL_compcv) = pad_new(padnew_SAVE);
2841 SAVEMORTALIZESV(PL_compcv); /* must remain until end of current statement */
2843 /* make sure we compile in the right package */
2845 if (CopSTASH_ne(PL_curcop, PL_curstash)) {
2846 SAVESPTR(PL_curstash);
2847 PL_curstash = CopSTASH(PL_curcop);
2849 SAVESPTR(PL_beginav);
2850 PL_beginav = newAV();
2851 SAVEFREESV(PL_beginav);
2852 SAVEI32(PL_error_count);
2854 /* try to compile it */
2856 PL_eval_root = Nullop;
2858 PL_curcop = &PL_compiling;
2859 PL_curcop->cop_arybase = 0;
2860 if (saveop && saveop->op_flags & OPf_SPECIAL)
2861 PL_in_eval |= EVAL_KEEPERR;
2864 if (yyparse() || PL_error_count || !PL_eval_root) {
2865 SV **newsp; /* Used by POPBLOCK. */
2866 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
2867 I32 optype = 0; /* Might be reset by POPEVAL. */
2872 op_free(PL_eval_root);
2873 PL_eval_root = Nullop;
2875 SP = PL_stack_base + POPMARK; /* pop original mark */
2877 POPBLOCK(cx,PL_curpm);
2883 if (optype == OP_REQUIRE) {
2884 char* msg = SvPVx(ERRSV, n_a);
2885 SV *nsv = cx->blk_eval.old_namesv;
2886 (void)hv_store(GvHVn(PL_incgv), SvPVX(nsv), SvCUR(nsv),
2888 DIE(aTHX_ "%sCompilation failed in require",
2889 *msg ? msg : "Unknown error\n");
2892 char* msg = SvPVx(ERRSV, n_a);
2894 POPBLOCK(cx,PL_curpm);
2896 Perl_croak(aTHX_ "%sCompilation failed in regexp",
2897 (*msg ? msg : "Unknown error\n"));
2900 char* msg = SvPVx(ERRSV, n_a);
2902 sv_setpv(ERRSV, "Compilation error");
2907 CopLINE_set(&PL_compiling, 0);
2909 *startop = PL_eval_root;
2911 SAVEFREEOP(PL_eval_root);
2913 /* Set the context for this new optree.
2914 * If the last op is an OP_REQUIRE, force scalar context.
2915 * Otherwise, propagate the context from the eval(). */
2916 if (PL_eval_root->op_type == OP_LEAVEEVAL
2917 && cUNOPx(PL_eval_root)->op_first->op_type == OP_LINESEQ
2918 && cLISTOPx(cUNOPx(PL_eval_root)->op_first)->op_last->op_type
2920 scalar(PL_eval_root);
2921 else if (gimme & G_VOID)
2922 scalarvoid(PL_eval_root);
2923 else if (gimme & G_ARRAY)
2926 scalar(PL_eval_root);
2928 DEBUG_x(dump_eval());
2930 /* Register with debugger: */
2931 if (PERLDB_INTER && saveop->op_type == OP_REQUIRE) {
2932 CV *cv = get_cv("DB::postponed", FALSE);
2936 XPUSHs((SV*)CopFILEGV(&PL_compiling));
2938 call_sv((SV*)cv, G_DISCARD);
2942 /* compiled okay, so do it */
2944 CvDEPTH(PL_compcv) = 1;
2945 SP = PL_stack_base + POPMARK; /* pop original mark */
2946 PL_op = saveop; /* The caller may need it. */
2947 PL_lex_state = LEX_NOTPARSING; /* $^S needs this. */
2949 RETURNOP(PL_eval_start);
2953 S_doopen_pm(pTHX_ const char *name, const char *mode)
2955 #ifndef PERL_DISABLE_PMC
2956 STRLEN namelen = strlen(name);
2959 if (namelen > 3 && strEQ(name + namelen - 3, ".pm")) {
2960 SV *pmcsv = Perl_newSVpvf(aTHX_ "%s%c", name, 'c');
2961 char *pmc = SvPV_nolen(pmcsv);
2964 if (PerlLIO_stat(pmc, &pmcstat) < 0) {
2965 fp = PerlIO_open(name, mode);
2968 if (PerlLIO_stat(name, &pmstat) < 0 ||
2969 pmstat.st_mtime < pmcstat.st_mtime)
2971 fp = PerlIO_open(pmc, mode);
2974 fp = PerlIO_open(name, mode);
2977 SvREFCNT_dec(pmcsv);
2980 fp = PerlIO_open(name, mode);
2984 return PerlIO_open(name, mode);
2985 #endif /* !PERL_DISABLE_PMC */
2991 register PERL_CONTEXT *cx;
2995 char *tryname = Nullch;
2996 SV *namesv = Nullsv;
2998 I32 gimme = GIMME_V;
2999 PerlIO *tryrsfp = 0;
3001 int filter_has_file = 0;
3002 GV *filter_child_proc = 0;
3003 SV *filter_state = 0;
3010 if (SvNIOKp(sv) && PL_op->op_type != OP_DOFILE) {
3011 if (SvPOK(sv) && SvNOK(sv) && SvNV(sv)) { /* require v5.6.1 */
3012 UV rev = 0, ver = 0, sver = 0;
3014 U8 *s = (U8*)SvPVX(sv);
3015 U8 *end = (U8*)SvPVX(sv) + SvCUR(sv);
3017 rev = utf8n_to_uvchr(s, end - s, &len, 0);
3020 ver = utf8n_to_uvchr(s, end - s, &len, 0);
3023 sver = utf8n_to_uvchr(s, end - s, &len, 0);
3026 if (PERL_REVISION < rev
3027 || (PERL_REVISION == rev
3028 && (PERL_VERSION < ver
3029 || (PERL_VERSION == ver
3030 && PERL_SUBVERSION < sver))))
3032 DIE(aTHX_ "Perl v%"UVuf".%"UVuf".%"UVuf" required--this is only "
3033 "v%d.%d.%d, stopped", rev, ver, sver, PERL_REVISION,
3034 PERL_VERSION, PERL_SUBVERSION);
3036 if (ckWARN(WARN_PORTABLE))
3037 Perl_warner(aTHX_ packWARN(WARN_PORTABLE),
3038 "v-string in use/require non-portable");
3041 else if (!SvPOKp(sv)) { /* require 5.005_03 */
3042 if ((NV)PERL_REVISION + ((NV)PERL_VERSION/(NV)1000)
3043 + ((NV)PERL_SUBVERSION/(NV)1000000)
3044 + 0.00000099 < SvNV(sv))
3048 NV nver = (nrev - rev) * 1000;
3049 UV ver = (UV)(nver + 0.0009);
3050 NV nsver = (nver - ver) * 1000;
3051 UV sver = (UV)(nsver + 0.0009);
3053 /* help out with the "use 5.6" confusion */
3054 if (sver == 0 && (rev > 5 || (rev == 5 && ver >= 100))) {
3055 DIE(aTHX_ "Perl v%"UVuf".%"UVuf".%"UVuf" required"
3056 " (did you mean v%"UVuf".%03"UVuf"?)--"
3057 "this is only v%d.%d.%d, stopped",
3058 rev, ver, sver, rev, ver/100,
3059 PERL_REVISION, PERL_VERSION, PERL_SUBVERSION);
3062 DIE(aTHX_ "Perl v%"UVuf".%"UVuf".%"UVuf" required--"
3063 "this is only v%d.%d.%d, stopped",
3064 rev, ver, sver, PERL_REVISION, PERL_VERSION,
3071 name = SvPV(sv, len);
3072 if (!(name && len > 0 && *name))
3073 DIE(aTHX_ "Null filename used");
3074 TAINT_PROPER("require");
3075 if (PL_op->op_type == OP_REQUIRE &&
3076 (svp = hv_fetch(GvHVn(PL_incgv), name, len, 0))) {
3077 if (*svp != &PL_sv_undef)
3080 DIE(aTHX_ "Compilation failed in require");
3083 /* prepare to compile file */
3085 if (path_is_absolute(name)) {
3087 tryrsfp = doopen_pm(name,PERL_SCRIPT_MODE);
3089 #ifdef MACOS_TRADITIONAL
3093 MacPerl_CanonDir(name, newname, 1);
3094 if (path_is_absolute(newname)) {
3096 tryrsfp = doopen_pm(newname,PERL_SCRIPT_MODE);
3101 AV *ar = GvAVn(PL_incgv);
3105 if ((unixname = tounixspec(name, Nullch)) != Nullch)
3108 namesv = NEWSV(806, 0);
3109 for (i = 0; i <= AvFILL(ar); i++) {
3110 SV *dirsv = *av_fetch(ar, i, TRUE);
3116 if (SvTYPE(SvRV(loader)) == SVt_PVAV
3117 && !sv_isobject(loader))
3119 loader = *av_fetch((AV *)SvRV(loader), 0, TRUE);
3122 Perl_sv_setpvf(aTHX_ namesv, "/loader/0x%"UVxf"/%s",
3123 PTR2UV(SvRV(dirsv)), name);
3124 tryname = SvPVX(namesv);
3135 if (sv_isobject(loader))
3136 count = call_method("INC", G_ARRAY);
3138 count = call_sv(loader, G_ARRAY);
3148 if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVGV) {
3152 if (SvTYPE(arg) == SVt_PVGV) {
3153 IO *io = GvIO((GV *)arg);
3158 tryrsfp = IoIFP(io);
3159 if (IoTYPE(io) == IoTYPE_PIPE) {
3160 /* reading from a child process doesn't
3161 nest -- when returning from reading
3162 the inner module, the outer one is
3163 unreadable (closed?) I've tried to
3164 save the gv to manage the lifespan of
3165 the pipe, but this didn't help. XXX */
3166 filter_child_proc = (GV *)arg;
3167 (void)SvREFCNT_inc(filter_child_proc);
3170 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
3171 PerlIO_close(IoOFP(io));
3183 if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVCV) {
3185 (void)SvREFCNT_inc(filter_sub);
3188 filter_state = SP[i];
3189 (void)SvREFCNT_inc(filter_state);
3193 tryrsfp = PerlIO_open("/dev/null",
3209 filter_has_file = 0;
3210 if (filter_child_proc) {
3211 SvREFCNT_dec(filter_child_proc);
3212 filter_child_proc = 0;
3215 SvREFCNT_dec(filter_state);
3219 SvREFCNT_dec(filter_sub);
3224 if (!path_is_absolute(name)
3225 #ifdef MACOS_TRADITIONAL
3226 /* We consider paths of the form :a:b ambiguous and interpret them first
3227 as global then as local
3229 || (*name == ':' && name[1] != ':' && strchr(name+2, ':'))
3232 char *dir = SvPVx(dirsv, n_a);
3233 #ifdef MACOS_TRADITIONAL
3237 MacPerl_CanonDir(name, buf2, 1);
3238 Perl_sv_setpvf(aTHX_ namesv, "%s%s", MacPerl_CanonDir(dir, buf1, 0), buf2+(buf2[0] == ':'));
3242 if ((unixdir = tounixpath(dir, Nullch)) == Nullch)
3244 sv_setpv(namesv, unixdir);
3245 sv_catpv(namesv, unixname);
3247 Perl_sv_setpvf(aTHX_ namesv, "%s/%s", dir, name);
3250 TAINT_PROPER("require");
3251 tryname = SvPVX(namesv);
3252 tryrsfp = doopen_pm(tryname, PERL_SCRIPT_MODE);
3254 if (tryname[0] == '.' && tryname[1] == '/')
3263 SAVECOPFILE_FREE(&PL_compiling);
3264 CopFILE_set(&PL_compiling, tryrsfp ? tryname : name);
3265 SvREFCNT_dec(namesv);
3267 if (PL_op->op_type == OP_REQUIRE) {
3268 char *msgstr = name;
3269 if (namesv) { /* did we lookup @INC? */
3270 SV *msg = sv_2mortal(newSVpv(msgstr,0));
3271 SV *dirmsgsv = NEWSV(0, 0);
3272 AV *ar = GvAVn(PL_incgv);
3274 sv_catpvn(msg, " in @INC", 8);
3275 if (instr(SvPVX(msg), ".h "))
3276 sv_catpv(msg, " (change .h to .ph maybe?)");
3277 if (instr(SvPVX(msg), ".ph "))
3278 sv_catpv(msg, " (did you run h2ph?)");
3279 sv_catpv(msg, " (@INC contains:");
3280 for (i = 0; i <= AvFILL(ar); i++) {
3281 char *dir = SvPVx(*av_fetch(ar, i, TRUE), n_a);
3282 Perl_sv_setpvf(aTHX_ dirmsgsv, " %s", dir);
3283 sv_catsv(msg, dirmsgsv);
3285 sv_catpvn(msg, ")", 1);
3286 SvREFCNT_dec(dirmsgsv);
3287 msgstr = SvPV_nolen(msg);
3289 DIE(aTHX_ "Can't locate %s", msgstr);
3295 SETERRNO(0, SS_NORMAL);
3297 /* Assume success here to prevent recursive requirement. */
3299 /* Check whether a hook in @INC has already filled %INC */
3300 if (!hook_sv || !(svp = hv_fetch(GvHVn(PL_incgv), name, len, 0))) {
3301 (void)hv_store(GvHVn(PL_incgv), name, len,
3302 (hook_sv ? SvREFCNT_inc(hook_sv)
3303 : newSVpv(CopFILE(&PL_compiling), 0)),
3309 lex_start(sv_2mortal(newSVpvn("",0)));
3310 SAVEGENERICSV(PL_rsfp_filters);
3311 PL_rsfp_filters = Nullav;
3316 SAVESPTR(PL_compiling.cop_warnings);
3317 if (PL_dowarn & G_WARN_ALL_ON)
3318 PL_compiling.cop_warnings = pWARN_ALL ;
3319 else if (PL_dowarn & G_WARN_ALL_OFF)
3320 PL_compiling.cop_warnings = pWARN_NONE ;
3321 else if (PL_taint_warn)
3322 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
3324 PL_compiling.cop_warnings = pWARN_STD ;
3325 SAVESPTR(PL_compiling.cop_io);
3326 PL_compiling.cop_io = Nullsv;
3328 if (filter_sub || filter_child_proc) {
3329 SV *datasv = filter_add(run_user_filter, Nullsv);
3330 IoLINES(datasv) = filter_has_file;
3331 IoFMT_GV(datasv) = (GV *)filter_child_proc;
3332 IoTOP_GV(datasv) = (GV *)filter_state;
3333 IoBOTTOM_GV(datasv) = (GV *)filter_sub;
3336 /* switch to eval mode */
3337 push_return(PL_op->op_next);
3338 PUSHBLOCK(cx, CXt_EVAL, SP);
3339 PUSHEVAL(cx, name, Nullgv);
3341 SAVECOPLINE(&PL_compiling);
3342 CopLINE_set(&PL_compiling, 0);
3346 /* Store and reset encoding. */
3347 encoding = PL_encoding;
3348 PL_encoding = Nullsv;
3350 op = DOCATCH(doeval(gimme, NULL, Nullcv, PL_curcop->cop_seq));
3352 /* Restore encoding. */
3353 PL_encoding = encoding;
3360 return pp_require();
3366 register PERL_CONTEXT *cx;
3368 I32 gimme = GIMME_V, was = PL_sub_generation;
3369 char tbuf[TYPE_DIGITS(long) + 12];
3370 char *tmpbuf = tbuf;
3379 TAINT_PROPER("eval");
3385 /* switch to eval mode */
3387 if (PERLDB_NAMEEVAL && CopLINE(PL_curcop)) {
3388 SV *sv = sv_newmortal();
3389 Perl_sv_setpvf(aTHX_ sv, "_<(eval %lu)[%s:%"IVdf"]",
3390 (unsigned long)++PL_evalseq,
3391 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
3395 sprintf(tmpbuf, "_<(eval %lu)", (unsigned long)++PL_evalseq);
3396 SAVECOPFILE_FREE(&PL_compiling);
3397 CopFILE_set(&PL_compiling, tmpbuf+2);
3398 SAVECOPLINE(&PL_compiling);
3399 CopLINE_set(&PL_compiling, 1);
3400 /* XXX For C<eval "...">s within BEGIN {} blocks, this ends up
3401 deleting the eval's FILEGV from the stash before gv_check() runs
3402 (i.e. before run-time proper). To work around the coredump that
3403 ensues, we always turn GvMULTI_on for any globals that were
3404 introduced within evals. See force_ident(). GSAR 96-10-12 */
3405 safestr = savepv(tmpbuf);
3406 SAVEDELETE(PL_defstash, safestr, strlen(safestr));
3408 PL_hints = PL_op->op_targ;
3409 SAVESPTR(PL_compiling.cop_warnings);
3410 if (specialWARN(PL_curcop->cop_warnings))
3411 PL_compiling.cop_warnings = PL_curcop->cop_warnings;
3413 PL_compiling.cop_warnings = newSVsv(PL_curcop->cop_warnings);
3414 SAVEFREESV(PL_compiling.cop_warnings);
3416 SAVESPTR(PL_compiling.cop_io);
3417 if (specialCopIO(PL_curcop->cop_io))
3418 PL_compiling.cop_io = PL_curcop->cop_io;
3420 PL_compiling.cop_io = newSVsv(PL_curcop->cop_io);
3421 SAVEFREESV(PL_compiling.cop_io);
3423 /* special case: an eval '' executed within the DB package gets lexically
3424 * placed in the first non-DB CV rather than the current CV - this
3425 * allows the debugger to execute code, find lexicals etc, in the
3426 * scope of the code being debugged. Passing &seq gets find_runcv
3427 * to do the dirty work for us */
3428 runcv = find_runcv(&seq);
3430 push_return(PL_op->op_next);
3431 PUSHBLOCK(cx, (CXt_EVAL|CXp_REAL), SP);
3432 PUSHEVAL(cx, 0, Nullgv);
3434 /* prepare to compile string */
3436 if (PERLDB_LINE && PL_curstash != PL_debstash)
3437 save_lines(CopFILEAV(&PL_compiling), PL_linestr);
3439 ret = doeval(gimme, NULL, runcv, seq);
3440 if (PERLDB_INTER && was != (I32)PL_sub_generation /* Some subs defined here. */
3441 && ret != PL_op->op_next) { /* Successive compilation. */
3442 strcpy(safestr, "_<(eval )"); /* Anything fake and short. */
3444 return DOCATCH(ret);
3454 register PERL_CONTEXT *cx;
3456 U8 save_flags = PL_op -> op_flags;
3461 retop = pop_return();
3464 if (gimme == G_VOID)
3466 else if (gimme == G_SCALAR) {
3469 if (SvFLAGS(TOPs) & SVs_TEMP)
3472 *MARK = sv_mortalcopy(TOPs);
3476 *MARK = &PL_sv_undef;
3481 /* in case LEAVE wipes old return values */
3482 for (mark = newsp + 1; mark <= SP; mark++) {
3483 if (!(SvFLAGS(*mark) & SVs_TEMP)) {
3484 *mark = sv_mortalcopy(*mark);
3485 TAINT_NOT; /* Each item is independent */
3489 PL_curpm = newpm; /* Don't pop $1 et al till now */
3492 assert(CvDEPTH(PL_compcv) == 1);
3494 CvDEPTH(PL_compcv) = 0;
3497 if (optype == OP_REQUIRE &&
3498 !(gimme == G_SCALAR ? SvTRUE(*SP) : SP > newsp))
3500 /* Unassume the success we assumed earlier. */
3501 SV *nsv = cx->blk_eval.old_namesv;
3502 (void)hv_delete(GvHVn(PL_incgv), SvPVX(nsv), SvCUR(nsv), G_DISCARD);
3503 retop = Perl_die(aTHX_ "%"SVf" did not return a true value", nsv);
3504 /* die_where() did LEAVE, or we won't be here */
3508 if (!(save_flags & OPf_SPECIAL))
3518 register PERL_CONTEXT *cx;
3519 I32 gimme = GIMME_V;
3524 push_return(cLOGOP->op_other->op_next);
3525 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), SP);
3528 PL_in_eval = EVAL_INEVAL;
3531 return DOCATCH(PL_op->op_next);
3542 register PERL_CONTEXT *cx;
3547 retop = pop_return();
3550 if (gimme == G_VOID)
3552 else if (gimme == G_SCALAR) {
3555 if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP))
3558 *MARK = sv_mortalcopy(TOPs);
3562 *MARK = &PL_sv_undef;
3567 /* in case LEAVE wipes old return values */
3568 for (mark = newsp + 1; mark <= SP; mark++) {
3569 if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) {
3570 *mark = sv_mortalcopy(*mark);
3571 TAINT_NOT; /* Each item is independent */
3575 PL_curpm = newpm; /* Don't pop $1 et al till now */
3583 S_doparseform(pTHX_ SV *sv)
3586 register char *s = SvPV_force(sv, len);
3587 register char *send = s + len;
3588 register char *base = Nullch;
3589 register I32 skipspaces = 0;
3590 bool noblank = FALSE;
3591 bool repeat = FALSE;
3592 bool postspace = FALSE;
3598 bool unchopnum = FALSE;
3599 int maxops = 12; /* FF_LINEMARK + FF_END + 10 (\0 without preceding \n) */
3602 Perl_croak(aTHX_ "Null picture in formline");
3604 /* estimate the buffer size needed */
3605 for (base = s; s <= send; s++) {
3606 if (*s == '\n' || *s == '@' || *s == '^')
3612 New(804, fops, maxops, U32);
3617 *fpc++ = FF_LINEMARK;
3618 noblank = repeat = FALSE;
3636 case ' ': case '\t':
3643 } /* else FALL THROUGH */
3651 *fpc++ = FF_LITERAL;
3659 *fpc++ = (U16)skipspaces;
3663 *fpc++ = FF_NEWLINE;
3667 arg = fpc - linepc + 1;
3674 *fpc++ = FF_LINEMARK;
3675 noblank = repeat = FALSE;
3684 ischop = s[-1] == '^';
3690 arg = (s - base) - 1;
3692 *fpc++ = FF_LITERAL;
3700 *fpc++ = 2; /* skip the @* or ^* */
3702 *fpc++ = FF_LINESNGL;
3705 *fpc++ = FF_LINEGLOB;
3707 else if (*s == '#' || (*s == '.' && s[1] == '#')) {
3708 arg = ischop ? 512 : 0;
3718 arg |= 256 + (s - f);
3720 *fpc++ = s - base; /* fieldsize for FETCH */
3721 *fpc++ = FF_DECIMAL;
3723 unchopnum |= ! ischop;
3725 else if (*s == '0' && s[1] == '#') { /* Zero padded decimals */
3726 arg = ischop ? 512 : 0;
3728 s++; /* skip the '0' first */
3737 arg |= 256 + (s - f);
3739 *fpc++ = s - base; /* fieldsize for FETCH */
3740 *fpc++ = FF_0DECIMAL;
3742 unchopnum |= ! ischop;
3746 bool ismore = FALSE;
3749 while (*++s == '>') ;
3750 prespace = FF_SPACE;
3752 else if (*s == '|') {
3753 while (*++s == '|') ;
3754 prespace = FF_HALFSPACE;
3759 while (*++s == '<') ;
3762 if (*s == '.' && s[1] == '.' && s[2] == '.') {
3766 *fpc++ = s - base; /* fieldsize for FETCH */
3768 *fpc++ = ischop ? FF_CHECKCHOP : FF_CHECKNL;
3771 *fpc++ = (U16)prespace;
3785 assert (fpc <= fops + maxops); /* ensure our buffer estimate was valid */
3787 { /* need to jump to the next word */
3789 z = WORD_ALIGN - SvCUR(sv) % WORD_ALIGN;
3790 SvGROW(sv, SvCUR(sv) + z + arg * sizeof(U32) + 4);
3791 s = SvPVX(sv) + SvCUR(sv) + z;
3793 Copy(fops, s, arg, U32);
3795 sv_magic(sv, Nullsv, PERL_MAGIC_fm, Nullch, 0);
3798 if (unchopnum && repeat)
3799 DIE(aTHX_ "Repeated format line will never terminate (~~ and @#)");
3805 S_num_overflow(NV value, I32 fldsize, I32 frcsize)
3807 /* Can value be printed in fldsize chars, using %*.*f ? */
3811 int intsize = fldsize - (value < 0 ? 1 : 0);
3818 while (intsize--) pwr *= 10.0;
3819 while (frcsize--) eps /= 10.0;
3822 if (value + eps >= pwr)
3825 if (value - eps <= -pwr)
3832 run_user_filter(pTHX_ int idx, SV *buf_sv, int maxlen)
3834 SV *datasv = FILTER_DATA(idx);
3835 int filter_has_file = IoLINES(datasv);
3836 GV *filter_child_proc = (GV *)IoFMT_GV(datasv);
3837 SV *filter_state = (SV *)IoTOP_GV(datasv);
3838 SV *filter_sub = (SV *)IoBOTTOM_GV(datasv);
3841 /* I was having segfault trouble under Linux 2.2.5 after a
3842 parse error occured. (Had to hack around it with a test
3843 for PL_error_count == 0.) Solaris doesn't segfault --
3844 not sure where the trouble is yet. XXX */
3846 if (filter_has_file) {
3847 len = FILTER_READ(idx+1, buf_sv, maxlen);
3850 if (filter_sub && len >= 0) {
3861 PUSHs(sv_2mortal(newSViv(maxlen)));
3863 PUSHs(filter_state);
3866 count = call_sv(filter_sub, G_SCALAR);
3882 IoLINES(datasv) = 0;
3883 if (filter_child_proc) {
3884 SvREFCNT_dec(filter_child_proc);
3885 IoFMT_GV(datasv) = Nullgv;
3888 SvREFCNT_dec(filter_state);
3889 IoTOP_GV(datasv) = Nullgv;
3892 SvREFCNT_dec(filter_sub);
3893 IoBOTTOM_GV(datasv) = Nullgv;
3895 filter_del(run_user_filter);
3901 /* perhaps someone can come up with a better name for
3902 this? it is not really "absolute", per se ... */
3904 S_path_is_absolute(pTHX_ char *name)
3906 if (PERL_FILE_IS_ABSOLUTE(name)
3907 #ifdef MACOS_TRADITIONAL
3910 || (*name == '.' && (name[1] == '/' ||
3911 (name[1] == '.' && name[2] == '/'))))